WASHINGTON — At first glance, the junior senator from Colorado looks like he’s losing money serving in the United States Congress.

Sen. Michael Bennet[1], a Democrat, is worth between $4.4 million and $15.4 million, according to 2013 financial disclosures posted publicly Wednesday.

Last year, the range of Bennet’s assets was larger, between $4.9 million and $19.3 million.

While it looks like he’s worth less money, the ranges are so large — and Bennet sold a mutual fund and deposited the money in a bank account — that his staff says his wealth is roughly stable.

They pointed out Bennet wasn’t in the job for the money.

(Rank and file members of Congress, both House and Senate, collect a $174,000 annual salary.)

Members are annually asked to disclose values of assets only in ranges, such as between $15,001 and $50,000, for example, so most ranges are large.

Bennet didn’t owe any money on either his Denver or Washington, D.C. home. He reported one “gift” of a $4,216 flight on Virginia Gov. Mark Warner’s private plane. It is required that most gifts over the value of $49.99 be reported.

Sen. Mark Udall[2], also a Democrat, filed for an extension for this 2013 disclosures.

His 2012 assets report show him worth between $664,000 to $2.2 million.

Last year, disclosures show Udall owing between $500,000 and $1 million on two homes — one in Colorado and a residence in Washington, D.C.

Financial disclosures for U.S. House of Representatives members are posted next month.